English

firelock

From fire + lock.

A compound of fire + lock

Proto-Indo-European *péh₂wr̥

…

Proto-Germanic *fuïr

Proto-West Germanic *fuir

Old English fȳr ‘fire’

Middle English fyr

English fire

Proto-Indo-European *lewg- ‘to bend’

Proto-Germanic *luką

Proto-West Germanic *lok ‘shutter’

Old English loc

Middle English lok

English lock

Today it means

noun A form of gunlock, in which the priming is ignited by a spark.

Language periods are conventional ranges, not dates for this word.

Etymograph / firelock